ARM Skia NEON patches - 35 - First AArch64 support

gyp/common_conditions.gypi

Index: gyp/common_conditions.gypi
diff --git a/gyp/common_conditions.gypi b/gyp/common_conditions.gypi
index bbf309762e88cad156f1f4bd8071b9c7360a893a..d8d949c808780840d75db02287c4e51c4d7b70c1 100644
--- a/gyp/common_conditions.gypi
+++ b/gyp/common_conditions.gypi
@@ -8,6 +8,12 @@
     'SK_DISTANCEFIELD_FONTS=<(skia_distancefield_fonts)',
   ],
   'conditions' : [
+    [ 'skia_arch_type == "arm64"', {
+      'cflags': [
+        '-ffp-contract=off',

[hal.canary, 2014/03/20 13:55:27]

Why are you adding this?  We don't use this for any other arch.

[djsollen, 2014/03/20 14:40:16]

What test fails? Does the test only fail in release or debug mode? or both?  We
want to go the fast route and we tolerate these differences on x86 between 32
and 64-bit build so we should have tolerance here as well.

[kevin.petit, 2014/03/20 16:05:09]

It was MatrixTest failing only in release mode.

+      ],
+    }],
+
     [ 'skia_os == "win"',
       {
         'defines': [